Step
*
of Lemma
single-valued-on-header_wf
∀[Info:Type]. ∀[f:Name ─→ Type]. ∀[X:EClass(Interface)]. ∀[hdr:Name].  (single-valued-on-header{i:l}(Info;X;hdr) ∈ ℙ')
BY
{ ProveWfLemma }
Latex:
Latex:
\mforall{}[Info:Type].  \mforall{}[f:Name  {}\mrightarrow{}  Type].  \mforall{}[X:EClass(Interface)].  \mforall{}[hdr:Name].
    (single-valued-on-header\{i:l\}(Info;X;hdr)  \mmember{}  \mBbbP{}')
By
Latex:
ProveWfLemma
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